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Co-axial hot swappable system for minimally invasive medical procedures

  • US 9,504,479 B2
  • Filed: 03/10/2014
  • Issued: 11/29/2016
  • Est. Priority Date: 03/11/2013
  • Status: Active Grant
First Claim
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1. A device to perform minimally invasive surgery on a vertebral body using an 11 gauge cannula, the system comprising:

  • a handle (15) with a shaft (10) less than the internal diameter (i.d.) of an 11 gauge cannula having a memory arm (12) with a blade (11) attached thereto;

    said memory arm compactable to a substantially co-axial position within a cannula;

    a hollow sheath (40) with a forward tip (42) having an i.d. substantially the same as the diameter of an 11 gauge cannula;

    said memory arm compacted into said hollow sheath (40);

    an 11 gauge cannula (103) having a distal (104) and a proximal end (106);

    the cannula having an interior diameter substantially the same as the i.d. of said hollow sheath; and

    , whereby aligning the tip and the proximal end of the cannula provides a pathway for the compacted memory arm and blade to be passed in a compacted state from the hollow sheath into the cannula, wherein the hollow cannula further comprises a mounting (100) corresponding to the forward tip;

    a sheath sleeve (50) with a forward end (54) that fits over at least a portion of the hollow sheath; and

    , wherein the forward end of the sheath sleeve is threaded (55), and the handle facing side of the cannula mount 120 has corresponding threads.

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